Well, you might now have to imagine ... because Israel Adesanya says he's serious about trying to use a WWE finishing move in his scrap at UFC 234 this weekend.

Remember, Adesanya busted out the People's Elbow -- and some other moves from guys like Ric Flair and Booker T -- during his open workout in Australia.

But, Adesanya says those moves ain't just for fun -- he's actually EXECUTED a WWE move in a fight before ... and he's down to do it again.

"Sweet Chin Music, easy," Israel says ... referencing Shawn Michaels' famous boot-to-the-face attack.

Turns out, Adesanya used the move during kickboxing days -- and says he's thought about dusting it off against Anderson Silva on Feb. 9.